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* mtd: NAND: jz4740: Make 'struct platform_driver jz_nand_driver' staticLars-Peter Clausen2010-12-031-1/+1
| | | | | | Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* mtd: remove unnecessary casts of void ptr returning alloc function return valuesJesper Juhl2010-12-031-1/+1
| | | | | | | | | | | | The [vk][cmz]alloc(_node) family of functions return void pointers which it's completely unnecessary/pointless to cast to other pointer types since that happens implicitly. This patch removes such casts from drivers/mtd/ Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* mtd: mtdchar: fix information leak to userlandVasiliy Kulikov2010-12-031-1/+1
| | | | | | | | | | Structure mtd_info_user is copied to userland with padding byted between "type" and "flags" fields uninitialized. It leads to leaking of contents of kernel stack memory. Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* mtd: onenand: implement cache program feature for 4KiB page onenandRoman Tereshonkov2010-12-031-3/+19
| | | | | | | | | | | | Implement cache program feature for 4KiB page onenand. This feature improves the write data performance. The observed 128KiB data program speed change is from 8827KiB/s to 14156 KiB/s when the feature is enabled. Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* mtd: onenand: fix omap2 code to handle cache program featureRoman Tereshonkov2010-12-031-3/+9
| | | | | | | | | Some fixes are introduced into omap2 code to handle errors when cache program feature is used. Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* mtd: use vzallocJoe Perches2010-12-032-6/+3
| | | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* mtd: OneNAND: Fix page offset handling at 2KiB pagesizeKyungmin Park2010-12-031-2/+5
| | | | | | | | When use the 2KiB pagesize, it should be set the correct page offset. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* mtd: nandsim: spell fixes in commentssrimugunthan2010-12-031-18/+18
| | | | | | Signed-off-by: srimugunthan <srimugunthan.dhandapani@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* mtd: m25p80: Add support for Macronix MX25L25655EKevin Cernekee2010-12-031-0/+1
| | | | | | | | | Untested, but expected to be compatible with MX25L25635E which I did test. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* mtd: m25p80: Add support for Macronix MX25L25635EKevin Cernekee2010-12-031-3/+28
| | | | | | | | | This is a 256Mbit (32MiB) part so minor changes were made to support 4-byte addressing. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* mtd: m25p80: Reinstate error print on unrecognized flashKevin Cernekee2010-12-031-0/+1
| | | | | | | | | | | | | Commit b34bc037b26e621e5fc13466767e4da110a7b3d3 removed the "unrecognized JEDEC id" error message, causing the probe function to silently abort if the flash ID is unrecognized. It is desirable to produce diagnostic output in this situation so that the user has some idea what went wrong. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* mtd: Fix MTD_OF_PARTS for all arch and minor tidy of MTD_PARTITIONSGrant Likely2010-12-032-9/+12
| | | | | | | | | | | | | MTD_OF_PARTS should be possible on all architectures, not just powerpc and microblaze, and it probably should not be a user selectable option. Neither does it need to be in a separate module. Also, rework MTD Kconfig to group options dependant on MTD_PARTITIONS into a if/endif block. Do the same for MTD_REDBOOT_PARTS. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* mtd: bcm963xx-flash: try JEDEC probe if CFI failsGuillaume LECERF2010-12-031-0/+5
| | | | | | | Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Acked-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* Merge git://git.infradead.org/mtd-2.6Linus Torvalds2010-10-3039-885/+2468
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: (82 commits) mtd: fix build error in m25p80.c mtd: Remove redundant mutex from mtd_blkdevs.c MTD: Fix wrong check register_blkdev return value Revert "mtd: cleanup Kconfig dependencies" mtd: cfi_cmdset_0002: make sector erase command variable mtd: cfi_cmdset_0002: add CFI detection for SST 38VF640x chips mtd: cfi_util: add support for switching SST 39VF640xB chips into QRY mode mtd: cfi_cmdset_0001: use defined value of P_ID_INTEL_PERFORMANCE instead of hardcoded one block2mtd: dubious assignment P4080/mtd: Fix the freescale lbc issue with 36bit mode P4080/eLBC: Make Freescale elbc interrupt common to elbc devices mtd: phram: use KBUILD_MODNAME mtd: OneNAND: S5PC110: Fix double call suspend & resume function mtd: nand: fix MTD_MODE_RAW writes jffs2: use kmemdup mtd: sm_ftl: cosmetic, use bool when possible mtd: r852: remove useless pci powerup/down from suspend/resume routines mtd: blktrans: fix a race vs kthread_stop mtd: blktrans: kill BKL mtd: allow to unload the mtdtrans module if its block devices aren't open ... Fix up trivial whitespace-introduced conflict in drivers/mtd/mtdchar.c
| * mtd: fix build error in m25p80.cAndres Salomon2010-10-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While building an x86 distro kernel, I hit the following: Kernel: arch/x86/boot/bzImage is ready (#7) ERROR: "of_mtd_parse_partitions" [drivers/mtd/devices/m25p80.ko] undefined! of_mtd_parse_partitions is defined with MTD_OF_PARTS, and that's only built on PPC and microblaze. The code in question should be wrapped w/ a stricter #ifdef. Signed-off-by: Andres Salomon <dilinger@queued.net> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: Remove redundant mutex from mtd_blkdevs.cDavid Woodhouse2010-10-301-7/+0
| | | | | | | | | | | | | | | | | | | | | | In commit 2a48fc0ab24241755dc93bfd4f01d68efab47f5a ('block: autoconvert trivial BKL users to private mutex'), Arnd replaced the BKL usage with a mutex. However, Maxim has already provided a better fix in commit 480792b7bf188c29b8d4b10fee65c3a06ec5dbf7 ('mtd: blktrans: kill BKL'), which was simply to remove the BKL without replacing it — since he'd already made it do all necessary locking for itself. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * Merge branch 'master' of ↵David Woodhouse2010-10-3025-378/+568
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git Conflicts: drivers/mtd/mtd_blkdevs.c Merge Grant's device-tree bits so that we can apply the subsequent fixes. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | MTD: Fix wrong check register_blkdev return valueFrank Li2010-10-301-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | register_blkdev return 1..255 when major = 0. if (ret ) { printk(KERN_WARNING "Unable to register %s block device on major %d: %d\n", tr->name, tr->major, ret); mutex_unlock(&mtd_table_mutex); return ret; } Above code will return fail when register_blkdev return allocated major number. Signed-off-by: Frank Li <Frank.Li@freescale.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | Revert "mtd: cleanup Kconfig dependencies"David Woodhouse2010-10-261-22/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 432dc821c90114f9b0e00f6752a700e937516ade. The individual CFI geometry options were carefully set up to get sane default values if the CFI_ADV_OPTIONS wasn't set, and it wasn't appropriate to move them into an if/endif block. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: cfi_cmdset_0002: make sector erase command variableGuillaume LECERF2010-10-262-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | Some old SST chips use 0x50 as sector erase command, instead of 0x30. Make this value variable to handle such chips. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: cfi_cmdset_0002: add CFI detection for SST 38VF640x chipsGuillaume LECERF2010-10-261-0/+26
| | | | | | | | | | | | | | | | | | | | | | | | Add support for SST38VF640x chips in CFI mode. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: yidong zhang <zhangyd6@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: cfi_util: add support for switching SST 39VF640xB chips into QRY modeGuillaume LECERF2010-10-261-0/+7
| | | | | | | | | | | | | | | Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: cfi_cmdset_0001: use defined value of P_ID_INTEL_PERFORMANCE instead of ↵Guillaume LECERF2010-10-261-2/+2
| | | | | | | | | | | | | | | | | | | | | hardcoded one Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | block2mtd: dubious assignmentNicolas Kaiser2010-10-261-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When block2mtd_erase fails, a duplicated assignment instantly changes instr->state from MTD_ERASE_FAILED to MTD_ERASE_DONE. It looks to me like this might not be intended, or is it? Signed-off-by: Nicolas Kaiser <nikai@nikai.net> Acked-By: Joern Engel <joern@logfs.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | P4080/mtd: Fix the freescale lbc issue with 36bit modeLan Chunhe-B258062010-10-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When system uses 36bit physical address, res.start is 36bit physical address. But the function of in_be32 returns 32bit physical address. Then both of them compared each other is wrong. So by converting the address of res.start into the right format fixes this issue. Signed-off-by: Lan Chunhe-B25806 <b25806@freescale.com> Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Reviewed-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | P4080/eLBC: Make Freescale elbc interrupt common to elbc devicesRoy Zang2010-10-252-285/+198
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move Freescale elbc interrupt from nand driver to elbc driver. Then all elbc devices can use the interrupt instead of ONLY nand. For former nand driver, it had the two functions: 1. detecting nand flash partitions; 2. registering elbc interrupt. Now, second function is removed to fsl_lbc.c. Signed-off-by: Lan Chunhe-B25806 <b25806@freescale.com> Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Reviewed-by: Anton Vorontsov <cbouatmailru@gmail.com> Cc: Wood Scott-B07421 <B07421@freescale.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: phram: use KBUILD_MODNAMEJoe Perches2010-10-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Use the more standard #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt No change in output strings. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: OneNAND: S5PC110: Fix double call suspend & resume functionKyungmin Park2010-10-251-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | The suspend & resume called from mtd core. So no need to call at driver. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: nand: fix MTD_MODE_RAW writesJon Povey2010-10-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | RAW writes were broken by 782ce79a45b3b850b108896fcf7da26754061c8f which introduced a check of ops->ooboffs in nand_do_write_ops(). When writing in RAW mode this is called with an ops struct on the stack of mtdchar.c:mtd_write() which does not initialise ops->ooboffs, so it is garbage and fails this test. This test does not make sense if ops->oobbuf is NULL, which it is in the RAW write path, so include that in the test. Signed-off-by: Jon Povey <jon.povey@racelogic.co.uk> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: sm_ftl: cosmetic, use bool when possibleMaxim Levitsky2010-10-251-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | I didn't know that kernel allows use of that typedef. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: r852: remove useless pci powerup/down from suspend/resume routinesMaxim Levitsky2010-10-252-31/+1
| | | | | | | | | | | | | | | | | | | | | | | | It turns out that pci core now handles these, so this code is redundant and can even cause bugs Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: blktrans: fix a race vs kthread_stopMaxim Levitsky2010-10-251-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | There is small race window that could make kthread_stop hang forever. I found that while hacking the IR subsystem. Signed-off-by: Maxim Levitsky <maximlevisky@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: blktrans: kill BKLMaxim Levitsky2010-10-251-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | It not needed, because I already added locking for all fops methods. Signed-off-by: Maxim Levitsky <maximlevisky@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: allow to unload the mtdtrans module if its block devices aren't openMaxim Levitsky2010-10-251-28/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now it once again possible to remove mtdtrans module. You still need to ensure that block devices of that module aren't mounted. This is due to the fact that as long as a block device is open, it still exists, therefore if we were to allow module removal, this block device might became used again. This time in addition to code review, I also made the code pass some torture tests like module reload in a loop + read in a loop + card insert/removal all at same time. The blktrans_open/blktrans_release don't take the mtd table lock because: While device is added (that includes execution of add_mtd_blktrans_dev) the lock is already taken Now suppose the device will never be removed. In this case even if we have changes in mtd table, the entry that we need will stay exactly the same. (Note that we don't look at table at all, just following private pointer of block device). Now suppose that someone tries to remove the mtd device. This will be propagated to trans driver which _ought_ to call del_mtd_blktrans_dev which will take the per device lock, release the mtd device and set trans->mtd = NULL. >From this point on, following opens won't even be able to know anything about that mtd device (which at that point is likely not to exist) Also the same care is taken not to trip over NULL mtd pointer in blktrans_dev_release. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Tested-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: maps: gpio-addr-flash: fix warnings and make more portableMike Frysinger2010-10-251-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As reported on lkml, building this module for HIMEM systems spews warnings about mismatch in pointer types. Further, we need to use ioremap() in order to properly access the flash memory on most systems rather than just doing it directly. Reported-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: Blackfin NFC: fix badblock location with BootROM OOBMike Frysinger2010-10-251-10/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The bbt structure isn't actually used, just the badblockpos. This lets the driver correctly handle badblocks with the different OOB layout with certain sized flashes. Previously, the blocks would all be reported as bad and be completely unusable. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: cfi_cmdset_0002: code cleanupsWolfram Sang2010-10-251-39/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - remove disabled code (hasn't been touched since the beginning of git and should be reimplemented if really needed) - convert remaining c++-comments to plain c-style Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: onenand: fix 4KiB page onenand chip recognitionRoman Tereshonkov2010-10-251-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For 4Gib non-DDP chip it does not follow that it is always 4KiB page chip. The number of data buffers is checked and if it is equal to 1 we suppose that it is 4KiB page onenand chip. Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: physmap_of: Loop through all "reg" tuples for mappingStefan Roese2010-10-251-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes the loop over the "reg" tuples to not exit directly upon of_address_to_resource() failure but to continue with the next "reg" tuple instead. This failure could be due to size = 0, which might be passed via the device-tree. This is needed for boards, where a "reg" tuple might have size 0 (of_address_to_resource() returns with EINVAL when size = 0). Example: Fully equipped board: reg = <0 0x00000000 0x00400000 0 0x00400000 0x00400000>; Partially equipped board: reg = <0 0x00000000 0x00400000 0 0x00400000 0x00000000>; This could be the case on boards with runtime detection of multiple NOR flash configurations where the detected flash size is inserted into the dtb in U-Boot. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: omap2: fix static declaration warningG, Manjunath Kondaiah2010-10-251-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes sparse warning for static declaration of variable "use_dma" drivers/mtd/nand/omap2.c:114:11: warning: symbol 'use_dma' was not declared. Should it be static? Signed-off-by: G, Manjunath Kondaiah <manjugk@ti.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: Fix endianness issues from device treeIan Munsie2010-10-255-20/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the appropriate conversions to correct the endianness issues in the MTD driver whenever it accesses the device tree (which is always big endian). Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: m25p80.c: Add support for S25FL032P spi-nor flash devices.David Jander2010-10-251-0/+1
| | | | | | | | | | | | | | | | | | Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: nandsim: add module param for BBT handlingSebastian Andrzej Siewior2010-10-251-2/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | I used this to check the BBT on flash together with a hack in mtdchar in order to read bad blocks. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: nand: introduce NAND_CREATE_EMPTY_BBTSebastian Andrzej Siewior2010-10-251-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | it will create an empty BBT table without considering vendor's BBT information. Vendor's information may be unavailable if the NAND controller has a different DATA & OOB layout or this information may be allready purged. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: nand: add support for BBT without OOBSebastian Andrzej Siewior2010-10-251-26/+202
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The first (sixt) byte in the OOB area contains vendor's bad block information. During identification of the NAND chip this information is collected by scanning the complete chip. The option NAND_USE_FLASH_BBT is used to store this information in a sector so we don't have to scan the complete flash. Unfortunately the code stores a marker in order to recognize the BBT in the OOB area. This will fail if the OOB area is completely used for ECC. This patch introduces the option NAND_USE_FLASH_BBT_NO_OOB which has to be used with NAND_USE_FLASH_BBT. It will then store BBT on flash without touching the OOB area. The BBT format on flash remains same except the first page starts with the recognition pattern followed by the version byte. This change was tested in nandsim and it looks good so far :) Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: nand: pull in td into read_bbt()Sebastian Andrzej Siewior2010-10-251-7/+9
| | | | | | | | | | | | | | | | | | | | | | | | No code change. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: nand: use ALIGN where possibleSebastian Andrzej Siewior2010-10-251-2/+1
| | | | | | | | | | | | | | | | | | Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: OneNAND: S5PC210 OneNAND supportKyungmin Park2010-10-251-3/+4
| | | | | | | | | | | | | | | | | | | | | S5PC210 has the same OneNAND controller as S5PC110 Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: OneNAND: S5PC110: Implement DMA interrupt methodKyungmin Park2010-10-251-1/+84
| | | | | | | | | | | | | | | | | | | | | | | | Implement DMA interrupt method. previous time it polls the DMA status. It can reduce the CPU power but decrease the performance a little. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | mtd: OneNAND: S5PC110: Fix wrong DMA handling when HIGHMEMKyungmin Park2010-10-251-11/+18
| | | | | | | | | | | | | | | | | | | | | | | | When use HIGHMEM, dma_map_single doesn't get the proper DMA address. So use the dma_map_page in this case. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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